/* HHPOKER Rainbow City Custom Styles */
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif; }
::selection { background-color: #4f46e5; color: #fff; }
details summary::-webkit-details-marker { display: none; }
details summary { list-style: none; }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f1f5f9; }
::-webkit-scrollbar-thumb { background: #a5b4fc; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #6366f1; }
.glass-card { background: rgba(255,255,255,0.85); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.rainbow-border { border: 2px solid transparent; background-clip: padding-box; position: relative; }
.rainbow-border::before { content: ''; position: absolute; inset: -2px; border-radius: inherit; background: linear-gradient(135deg, #6366f1, #a855f7, #ec4899, #f59e0b); z-index: -1; }